public async Task <IHttpActionResult> Post([FromBody] ConferenceModels conference)
 {
     using (ApplicationDbContext db = new ApplicationDbContext())
     {
         db.Conference.Add(conference);
         await db.SaveChangesAsync();
     }
     return(Ok());
 }
 public async Task <IHttpActionResult> Put(int id, [FromBody] ConferenceModels conference)
 {
     using (ApplicationDbContext db = new ApplicationDbContext())
     {
         if (id != conference.Id)
         {
             return(BadRequest());
         }
         db.Entry(conference).State = EntityState.Modified;
         await db.SaveChangesAsync();
     }
     return(Ok());
 }